Zyrtec-D is a medication used to treat allergy symptoms and sinus congestion. Zyrtec-D is available over the counter in most states, but only by prescription in certain states. Zyrtec-D is a combination drug composed of Cetirizine and Pseudophedrine.
Cetirizine is an antihistamine. Cetirizine is believed to work by blocking the action of histamines (chemicals associated with allergic reactions) in the body. Pseudophedrine is a decongestant. Pseudophedrine is believed to work by causing the blood vessels to constrict, reducing swelling in the sinus passages.
How do I take it?
Take Zyrtec-D as directed by your doctor, or follow the directions on the package.
Zyrtec-D comes in the form of a tablet.
The FDA-approved label for Zyrtec-D includes a warning that people who have diabetes, high blood pressure, glaucoma, heart or thyroid disease, or prostate problems, as well as those who experience nervousness, insomnia, or dizziness while taking the medication, should consult a physician regarding its use. Drowsiness may occur.
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